DEX23: Distribution of days supply

This query is used to provide summary statistics for days supply (days_supply) across all drug exposure records: the mean, the standard deviation, the minimum, the 25th percentile, the median, the 75th percentile, the maximum and the number of missing values. No input is required for this query.

Input:

<None>

Sample query run:
The following is a sample run of the query. The input parameters are highlighted in blue

-- Oracle
SELECT min(tt.stat_value) AS min_value
, max(tt.stat_value) AS max_value
, avg(tt.stat_value) AS avg_value
, (round(stdDev(tt.stat_value)) ) AS stdDev_value
, PERCENTILE_DISC(0.25) WITHIN GROUP( ORDER BY tt.stat_value )
AS percentile_25
, PERCENTILE_DISC(0.5) WITHIN GROUP (ORDER BY tt.stat_value )
AS median_value
, PERCENTILE_DISC(0.75) WITHIN GROUP (ORDER BY tt.stat_value )
AS percential_75
FROM
( SELECT t.days_supply AS stat_value
FROM drug_exposure t
where t.days_supply > 0
) tt
;

Output:
Output field list:

Field

Description

min_value

max_value

avg_value

days_supply

The number of days of supply of the medication as recorded in the original prescription or dispensing record.